Even the power to believe comes from the Word of God itself - in HEARING THE WORD - the God grants faith to the human heart.

they didn’t READ God’s word back then MOST of them couldn’t read!

1 Thes 2:13For this reason we also constantly thank God that when you received the word of God which you heard from us, you accepted it not as the word of men, but for what it really is, the word of God, which also performs its work in you who believe.

Treat it like the word of GOD and not just any word - The same word that said “LET THERE BE LIGHT”